id: PYSEC-2026-2688
published: "2026-07-13T15:46:23.299816Z"
modified: "2026-07-13T16:05:08.976434Z"
aliases:
- CVE-2026-35163
- GHSA-p6qx-ghxm-389h
summary: OctoPrint has XSS in its Suppressed Command Notifications
details: "### Impact\n\nOctoPrint versions up to and including 1.11.7 as well as 2.0.0rc1 and 2.0.0rc2 are affected by a vulnerability that allows injection of arbitrary HTML and JavaScript into Suppressed Command notifications popups generated by the printer.\n\nAn attacker who successfully convinces a victim to print a specially crafted file could exploit this issue to disrupt ongoing prints, extract information (including sensitive configuration settings, if the targeted user has the necessary permissions for that), or perform other actions on behalf of the targeted user within the OctoPrint instance.\n\n### Patches\n\nThe vulnerability has been patched in version 1.11.8 and 2.0.0rc3.\n\n### Workaround\n\nOctoPrint administrators can mitigate the risk by disabling popups:\n- for Action Command notifications, set _OctoPrint Settings -> Serial Connection -> Behaviour -> Sanity Checking -> Display notifications for suppressed commands_ to _Never show notifications_\n\nIt is also strongly recommended to ensure that files being printed originate from trusted sources, and, whenever possible, are sliced with an application's own slicer.\n\n### Credits\n\nThis vulnerability was discovered and responsibly disclosed to OctoPrint by [Jacopo Tediosi](https://github.com/jacopotediosi).\n\n### Timeline\n\n2026-03-18: Report received\n2026-04-01: Report verified\n2026-04-01: Fix ready for 2.0.0\n2026-06-22: Fix backported to 1.11.x\n2026-06-23: Fix released with 1.11.8 and 2.0.0rc3"
affected:
- package:
    name: octoprint
    ecosystem: PyPI
    purl: pkg:pypi/octoprint
  ranges:
  - type: ECOSYSTEM
    events:
    - introduced: "0"
    - fixed: 1.11.8
    - introduced: 2.0.0rc1
    - fixed: 2.0.0rc3
  versions:
  - 1.10.0
  - 1.10.0rc1
  - 1.10.0rc2
  - 1.10.0rc3
  - 1.10.0rc4
  - 1.10.1
  - 1.10.2
  - 1.10.3
  - 1.11.0
  - 1.11.0rc1
  - 1.11.0rc2
  - 1.11.0rc3
  - 1.11.0rc4
  - 1.11.0rc5
  - 1.11.0rc6
  - 1.11.0rc7
  - 1.11.1
  - 1.11.2
  - 1.11.3
  - 1.11.4
  - 1.11.5
  - 1.11.6
  - 1.11.7
  - 1.3.11
  - 1.3.12
  - 1.3.12rc1
  - 1.3.12rc3
  - 1.4.0
  - 1.4.0rc1
  - 1.4.0rc2
  - 1.4.0rc3
  - 1.4.0rc4
  - 1.4.0rc5
  - 1.4.0rc6
  - 1.4.1
  - 1.4.1rc1
  - 1.4.1rc2
  - 1.4.1rc3
  - 1.4.1rc4
  - 1.4.2
  - 1.5.0
  - 1.5.0rc1
  - 1.5.0rc2
  - 1.5.0rc3
  - 1.5.1
  - 1.5.2
  - 1.5.3
  - 1.6.0
  - 1.6.0rc1
  - 1.6.0rc2
  - 1.6.0rc3
  - 1.6.1
  - 1.7.0
  - 1.7.0rc1
  - 1.7.0rc2
  - 1.7.0rc3
  - 1.7.1
  - 1.7.2
  - 1.7.3
  - 1.8.0
  - 1.8.0rc1
  - 1.8.0rc2
  - 1.8.0rc3
  - 1.8.0rc4
  - 1.8.0rc5
  - 1.8.1
  - 1.8.2
  - 1.8.3
  - 1.8.4
  - 1.8.5
  - 1.8.6
  - 1.8.7
  - 1.9.0
  - 1.9.0rc1
  - 1.9.0rc2
  - 1.9.0rc3
  - 1.9.0rc4
  - 1.9.0rc5
  - 1.9.0rc6
  - 1.9.1
  - 1.9.2
  - 1.9.3
  - 2.0.0rc1
  - 2.0.0rc2
references:
- type: WEB
  url: https://github.com/OctoPrint/OctoPrint/security/advisories/GHSA-p6qx-ghxm-389h
- type: PACKAGE
  url: https://github.com/OctoPrint/OctoPrint
- type: PACKAGE
  url: https://pypi.org/project/octoprint
- type: ADVISORY
  url: https://github.com/advisories/GHSA-p6qx-ghxm-389h
- type: ADVISORY
  url: https://nvd.nist.gov/vuln/detail/CVE-2026-35163
severity:
- type: CVSS_V4
  score: CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:L/VI:L/VA:L/SC:L/SI:L/SA:N